How to post form results on same page?

ozzysworld

Hi guys. So I've written my first ever PHP script to calculate how many posts and panels my customers will need.

My question is : How do I post the results of the form entry into the same html page?

so basically my goal is: they enter thier fence length, and then the results of my script are instantly shown without re-loading the page.

Thanks if anyone can help.

Here's my first ever code:

[INDENT]<?php

$fence = $POST['length'];
$posts = $fence/6;
$existing = $POST['existing'];

if ($existing == "yes")

echo "You will need  " . round($posts) . "  posts & " . round($posts) . " Panels";

else
echo "You will need " . round($posts+1) . " posts & " . round($posts) . " Panels";

?>[/INDENT]

And here's my form

[INDENT]<html>
<head>
<title>Untitled Document</title>
</head>
<body>
<form action="post-calc.php" method="post" name="form">
<p>
What is your required Fence LENGTH?<br />
<br /><input type="text" name="length" size="30" style="border: 1px solid #808080">
<label><br />
<br />
Do you have an existing post already?<br />
<br />
<select name="existing" id="existing">
<option>yes</option>
<option>no</option>
</select>
</label>
</p>
<p>
<input type="submit" value="Submit" name="B1" />
</p>
</form>
</body>
</html> [/INDENT]

Thanks in advance

Shane

sneakyimp

If you want to avoid reloading the page, you'll either need to use a frame or iframe or you'll need to figure out how to do some AJAX.

if you want to have the form post to a frame, you just add a TARGET attribute to your form and add a frame to your page:

<html>
  <body>
    <form method="post" action="foo.php" target="foo">
      <input type="text" name="my_input">
      <input type="submit" name="submit" value="submit">
    </form>
    <iframe name="foo" width="100%" height="300">
      <p>Your browser does not support iframes.</p>
    </iframe>
  </body>
</html>

djjjozsi

you have to calculate the results in Javascript, but you need to check the inserted values in php too.

ozzysworld

Thanks alot guys. That's really helpful!

Thanks for the fast replies.

ozzysworld

Success!

Just as a follow-up for anyone reading this.

The "iframe" thing worked perfectly.

It will do the job nicely for now.

Thanks alot